diff --git a/rpcs3/Emu/NP/clans_client.cpp b/rpcs3/Emu/NP/clans_client.cpp
index 9c75c1f8b4..09fc012a04 100644
--- a/rpcs3/Emu/NP/clans_client.cpp
+++ b/rpcs3/Emu/NP/clans_client.cpp
@@ -1,8 +1,21 @@
 #include "stdafx.h"
 
 #include <util/types.hpp>
+
+// wolfssl uses old-style casts which break clang builds
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wold-style-cast"
+#pragma clang diagnostic ignored "-Wextern-c-compat"
+#pragma clang diagnostic ignored "-Wunsafe-buffer-usage"
+#endif
+
 #include <wolfssl/wolfcrypt/coding.h>
 
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
 #include <Crypto/utils.h>
 #include <Utilities/StrUtil.h>
 #include <Utilities/StrFmt.h>